Other
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21741808c&link_type=abstract
American Astronomical Society, AAS Meeting #217, #418.08; Bulletin of the American Astronomical Society, Vol. 43, 2011
Other
Scientific paper
I will present results from our ongoing program using the Wide-field Infrared Camera (WIRCam) on the Canada-France-Hawaii Telescope (CFHT) to detect thermal emission from hot Jupiters in the near-infrared and our new program to search for spectral features in the transmission spectrum of the Super-Earth GJ 1214b . We've detected the thermal emission of several hot Jupiters in Ks-band (TrES-2b, TrES-3b, and WASP-3b) to date as well as the thermal emission of the highly irradiated exoplanet WASP-12b in the J, H and Ks-bands. These detections allow us to characterize these planets' spectral energy distributions near their blackbody peaks, and when combined with results from shorter and longer wavelengths, allow us to constrain the combination of the Bond albedo and day-to-night-side redistribution of heat in these planets atmospheres as well as their pressure-temperature profiles with depth. These detections allow us to answer other scientific questions such as whether hot Jupiters are stormy, and whether there is any evidence that the intriguing exoplanet WASP-12b is precessing or if there is material being tidally stripped from WASP-12b and forming a circumstellar disk. Lastly, I will present recent results from our program to look for spectral features in the transmission spectrum of the recently discovered Super-Earth GJ 1214b by searching for variations in its transit depth from near-simultaneous photometry in two near-infrared filters; if these spectral features were detected it would argue that GJ 1214b has an atmosphere predominantly composed of hydrogen and helium and that it has a rocky core. If that is the case, GJ 1214b, the first Super-Earth we can readily characterize, would arguably be better described as a sub-Neptune.
Albert Loic
Bonomo Aldo
Croll Bryce
Cushing Michael
Deleuil Magali
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